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Diffstat (limited to 'deps/udns/dnsget.1')
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diff --git a/deps/udns/dnsget.1 b/deps/udns/dnsget.1 new file mode 100644 index 0000000000..711f29769e --- /dev/null +++ b/deps/udns/dnsget.1 @@ -0,0 +1,182 @@ +.\" $Id: dnsget.1,v 1.3 2005/04/20 00:55:34 mjt Exp $ +.\" dnsget manpage +.\" +.\" Copyright (C) 2005 Michael Tokarev <mjt@corpit.ru> +.\" This file is part of UDNS library, an async DNS stub resolver. +.\" +.\" This library is free software; you can redistribute it and/or +.\" modify it under the terms of the GNU Lesser General Public +.\" License as published by the Free Software Foundation; either +.\" version 2.1 of the License, or (at your option) any later version. +.\" +.\" This library is distributed in the hope that it will be useful, +.\" but WITHOUT ANY WARRANTY; without even the implied warranty of +.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +.\" Lesser General Public License for more details. +.\" +.\" You should have received a copy of the GNU Lesser General Public +.\" License along with this library, in file named COPYING.LGPL; if not, +.\" write to the Free Software Foundation, Inc., 59 Temple Place, +.\" Suite 330, Boston, MA 02111-1307 USA + +.TH dnsget 1 "Apr 2005" "User Utilities" + +.SH NAME +dnsget \- DNS lookup utility + +.SH SYNOPSYS +.B dnsget +.RB [\| \-v \||\| \-q \|] +.RB [\| \-c +.IR class \|] +.RB [\| \-t +.IR type \|] +.RB [\| \-o +.IR option : value \] +.IR name \|.\|.\|. + +.SH DESCRIPTION +.B dnsget +is a simple command-line to perform DNS lookups, similar to +.BR host (1) +and +.BR dig (1). +It is useable for both interactive/debugging scenarious and +in scripts. +The program is implemented using +.BR udns (3) +library. + +.PP +By default, +.B dnsget +produces a human-readable output, similar to +.RS +.nf +alias.example.com. CNAME www.example.com. +www.example.com. A 192.168.1.1 +www.example.com. MX 10 mx.example.com. +.fi +.RE +which is just sufficient to see how a given name resolves. +Output format is controllable with +.B \-v +and +.B \-q +options -- the former increases verbosity level up to printing +the whole DNS contents of all packets sent and received, which +is suitable for debugging DNS problems, while the latter reduces +the level, making output more quiet, up to bare result with no +error messages, which is good for scripts. + +.SH OPTIONS + +The following options are recognized by +.BR dnsget : + +.TP +.B \-v +produce more detailed output. More +.BR \-v 's +means more details will be produced. With single +.BR \-v , dnsget +will print contents of all received DNS packets (in a readable format), +while with +.BR \-vv , +it will output all outgoing DNS packets too. + +.TP +.B \-q +the opposite for \fB\-v\fR -- produce less detailed output. +With single +.BR \-q , dnsget +will only show (decoded) data from final DNS resource records (RR), +while +.B \-qq +also suppresses error messages. + +.TP +\fB\-t \fItype\fR +request record(s) of the given type \fItype\fR. By default, +.B dnsget +will ask for IPv4 address (A) record, or for PTR record if the +argument in question is an IPv4 or IPv6 address. Recognized +types include A, AAAA, MX, TXT, CNAME, PTR, NS, SOA, ANY and +others. + +.TP +\fB\-c \fIclass\fR +request DNS record(s) of the given class \fIclass\fR. By +default +.B dnsget +uses IN class. Valid classes include IN, CH, HS, ANY. + +.TP +.B \-a +(compatibility option). Equivalent to setting query type to +.B ANY +and increasing verbosity level +.RB ( \-v ). + +.TP +.B \-C +(planned) + +.TP +.B \-x +(planned) + +.TP +\fB\-o \fIoption\fR:\fIvalue\fR +Set resolver option \fIoption\fR to the value \fIvalue\fR +(may be specified several times). The same as setting +.RB $ RES_OPTIONS +environment variable. The following options are recognized: +.RS +.TP +\fBtimeout\fR:\fIsec\fR +Set initial query timeout to \fIsec\fR. +.TP +\fBattempts\fR:\fInum\fR +(re)try every query \fInum\fR times before failing. +.TP +\fBudpbuf\fR:\fIbytes\fR +set DNS UDP buffer size to \fIbytes\fR bytes. Valid values +are from 512 to 65535. If \fIbytes\fR is greather than 512, +EDNS0 (RFC 2671) extensions will be used. +.TP +\fBport\fR:\fInum\fR +Use given UDP port number \fInum\fR instead of the default port 53 (domain). +.RE + +.TP +\fB\-n \fInameserver\fR +Use the given nameserver(s) (may be specified more than once) +instead of the default. Using this option has the same same effect as +.RB $ NSCACHEIP +or +.RB $ NAMESERVERS +environment variables, with the only difference that only IPv4 addresses +are recognized for now, and it is possible to specify names (which will +be resolved using default settings) instead of IP addresses. + +.TP +.B \-h +print short help and exit. + +.SH "RETURN VALUE" +When all names where resovled successefully, +.B dnsget +exits with zero exit status. If at least one name was not found, +.B dnsget +will exit with return code 100. If some other error occured during +name resolution, it will exit with code 99. In case of usage or +initialization error, +.B dnsget +will return 1. + +.SH "SEE ALSO" +.BR host (1) +.BR dig (1) +.BR resolv.conf (5) +.BR udns (3). |